Greist-Bousquet S.; Schiffman H.R. (1981). "The Poggendorff illusion: an illusion of linear extent?". Perception. 10 (2): 155–64. doi:10.1068/p100155. PMID7279544.
Weintraub, D. J.; Krantz, D. H.; Olson, T. P. (November 1980). "The Poggendorff illusion: consider all the angles". Journal of Experimental Psychology. Human Perception and Performance. 6 (4): 718–725. doi:10.1037/0096-1523.6.4.718. ISSN0096-1523. PMID6449539.
Westheimer G, Wehrhahn C (1997). "Real and virtual borders in the Poggendorff illusion". Perception. 26 (12): 1495–501. doi:10.1068/p261495. PMID9616477.
Day, R.H. (1973). "The oblique line illusion: The poggendorff effect without parallels". The Quarterly Journal of Experimental Psychology. 25 (4): 535–541. doi:10.1080/14640747308400375. PMID4767535.
Greist-Bousquet S.; Schiffman H.R. (1981). "The Poggendorff illusion: an illusion of linear extent?". Perception. 10 (2): 155–64. doi:10.1068/p100155. PMID7279544.
Weintraub, D. J.; Krantz, D. H.; Olson, T. P. (November 1980). "The Poggendorff illusion: consider all the angles". Journal of Experimental Psychology. Human Perception and Performance. 6 (4): 718–725. doi:10.1037/0096-1523.6.4.718. ISSN0096-1523. PMID6449539.
Westheimer G, Wehrhahn C (1997). "Real and virtual borders in the Poggendorff illusion". Perception. 26 (12): 1495–501. doi:10.1068/p261495. PMID9616477.
Day, R.H. (1973). "The oblique line illusion: The poggendorff effect without parallels". The Quarterly Journal of Experimental Psychology. 25 (4): 535–541. doi:10.1080/14640747308400375. PMID4767535.
Weintraub, D. J.; Krantz, D. H.; Olson, T. P. (November 1980). "The Poggendorff illusion: consider all the angles". Journal of Experimental Psychology. Human Perception and Performance. 6 (4): 718–725. doi:10.1037/0096-1523.6.4.718. ISSN0096-1523. PMID6449539.